544355421642 has 12 divisors (see below), whose sum is σ = 1179436746930. Its totient is φ = 181451807208.

The previous prime is 544355421637. The next prime is 544355421647. The reversal of 544355421642 is 246124553445.

It is a happy number.

544355421642 is a `hidden beast` number, since 5 + 4 + 43 + 5 + 542 + 1 + 64 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (544355421637) and next prime (544355421647).

It can be written as a sum of positive squares in only one way, i.e., 412884638721 + 131470782921 = 642561^2 + 362589^2 .

It is not an unprimeable number, because it can be changed into a prime (544355421647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15120983917 + ... + 15120983952.

Almost surely, 2^544355421642 is an apocalyptic number.

544355421642 is an abundant number, since it is smaller than the sum of its proper divisors (635081325288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

544355421642 is a wasteful number, since it uses less digits than its factorization.

544355421642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30241967877 (or 30241967874 counting only the distinct ones).

The product of its digits is 2304000, while the sum is 45.

The spelling of 544355421642 in words is "five hundred forty-four billion, three hundred fifty-five million, four hundred twenty-one thousand, six hundred forty-two".